My cot came today. I'll post an update to this report after I've put it together for the first time. Probably won't go out and pitch the tent and sleep on it tonight, though.
The question I have is how many square inches of contact surface do those twelve rounded feet provide? Your body weight is being disproportionately spread over those relatively few square inches. The zone from your shoulders to hips is a significant amount of weight on a very small surface area.I find it hard to believe that the feet of the cot would harm the tent. Your weight is distributed over 12 feet, and each foot is rounded.